Formulas
Original instructions
Calculating the output OUT
With each execution the output OUT is calculated with the following formula:
If OUT exceeds the threshold value thld:
Explanation of formula variables
Meaning of the variables in the formulas above:
Variable
Meaning
time elapsed since last block execution
Value of the output OUT at the end of the previous execution of the controller
Output of the integral results
In consideration of this principle, the function block can issue three integral results:
Result
Explanation
Partial collective index OUT
indicates the integral result of input IN from the last threshold value overflow.
cter
Frequency of achieving the threshold value
Collective register (outc)
corresponds to the integral result of the input IN since the beginning of the integral invoice This counter will be updated at every execution via the following formula: